Quote The Whiffy Kipper="The Whiffy Kipper"If today's players are far more fitter and athletic then why do they need more substitutions than the less fitter players of yesteryear'"
Who says they "Need" more substitutes?
Thems just the rules
If we changed the rules to No substitutes thebplayets would adapt to that and have to pace themselves to those rules.
Simple fact is
Zero substitutions
10 substitutions
8 substitutions
Pr
6 substitutions (which is what I would go for)
Playing under any of the above the teams of today would murder the teams of yesteryear.
That's not to decry the players of yesteryear, quite the opposite, it's just tou can only be The player you were/are in the era you played in.
The players of yesteryear would have adapted etx in their own ways, and some would have made it and been a great today, some wouldn't.
And same could be said about players of today being transported back in time.
Some would adapt to the old ways, some wouldn't.
But the players of today are far far bigger, fitter, stronger etc etc as a whole that they were. They are also far more tactically amd technically astute as a whole than they were.
Going back and picking up recordings of moves that gregory/Edward's, Henry Paul/Connolly etc. etc did 20/30 years ago and think it would make us better now is as unrealistic as getting an Alex Murphy/Doug Laughton or whoever into coach us as they were great coaches, they were, in THEIR ERA.
Like it or not, if it were possible to physically lift the team of 1987/1995 up and drop them into today (and I am sure enforcer will tell me that if I think outside of the box then it could be possible) they would get beaten comfortably due to the advances in all the areas mentioned above.
That doesn't mean I think Tommy is a better scrum half than Greg or gildart is a better centre than gene miles or flower better than Platt. It's just the evolution of physical/tactical and technical abilities.
If the players of yesteryear had these benefits then they would undoubtedly be better than their current counterparts, but they didn't and the game has advanced so much (and not necessarily all of these are for the better).